Condensed Consolidated Balance Sheets (USD $)	Jul. 02, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 12,715,000	$ 6,069,000
Accounts receivable, net	109,000	108,000
Inventory, net	2,303,000	2,230,000
Prepaid expenses and other current assets	300,000	344,000
Total Current Assets	15,427,000	8,751,000
Property and equipment, net of accumulated depreciation of $22,158,000 and $21,948,000, respectively	1,619,000	1,334,000
Patents, licenses and purchased technology, net of accumulated amortization of $2,295,000 and $2,494,000, respectively	1,503,000	2,274,000
Other assets	206,000	210,000
Total Assets	18,755,000	12,569,000
Current Liabilities:
Accounts payable	508,000	548,000
Accrued expenses	734,000	517,000
Current portion of capitalized lease obligations and long term debt	14,000	31,000
Total Current Liabilities	1,256,000	1,096,000
Other long term liabilities	608,000	577,000
Total Liabilities	1,864,000	1,673,000
Commitments and contingencies-Notes 6 and 7
Stockholders' Equity:
Preferred stock, $.001 par value, 2,000,000 shares authorized, 611,523 shares issued and outstanding	1,000	1,000
Common stock, $.001 par value, 250,000,000 shares authorized, 33,032,066 and 27,217,408 shares issued and outstanding, respectively	33,000	28,000
Capital in excess of par value	261,412,000	248,500,000
Accumulated deficit	(244,555,000)	(237,633,000)
Total Stockholders' Equity	16,891,000	10,896,000
Total Liabilities and Stockholders' Equity	$ 18,755,000	$ 12,569,000